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Maxim > Products > [Temperature Sensors] 
MAX6687, MAX6688
Local/Remote Temperature Switches in a µMAX Package

Dual-Output, Local/Remote Temperature Switches in a Single µMAX® Package


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 144kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX6687/MAX6688 comprise a remote-junction temperature switch and a local temperature switch in a single package. The remote-junction switch uses an external P-N junction (typically a diode-connected transistor on the die of an external CPU, ASIC, or FPGA) as a sensing element to measure the remote temperature. The remote-junction temperature switch has a factory-programmed trip temperature threshold of either +120°C or +125°C. The local temperature switch has a pin-programmable temperature threshold that is set by connecting pins S1 and S2 to ground, to VDD, or leaving them floating. Hysteresis for both local and remote thresholds is 5°C. The MAX6687/MAX6688 do not assert on transient (single-sample) faults or when power is first applied.

The MAX6687 has two open-drain active-low outputs while the MAX6688 has two push-pull active-high outputs. TREMOTE asserts a logic signal when the remote temperature exceeds the factory-programmed +120°C or +125°C trip threshold. TLOCAL is asserted when the die temperature exceeds the pin-programmed threshold, which is controlled by pins S1 and S2. The local thresholds are available in two ranges in 5°C increments. The two ranges are +40°C to +80°C and +75°C to +115°C.

The MAX6687/MAX6688 operate from a 3.0V to 5.5V power supply and are available in a space-saving 8-pin µMAX package.

Key Features   Applications/Uses
  • Pin-Programmable Local Temperature Threshold in 5°C Increments in Two Distinct Ranges: +40°C to +80°C and +75°C to +115°C
  • Factory-Programmed Remote Threshold: +120°C (L Suffix) or +125°C (H Suffix)
  • Open-Drain Active-Low Outputs (MAX6687)
  • CMOS Push-Pull, Active-High Outputs (MAX6688)
  • ±1.5°C Accuracy
  • 2Hz Temperature Sampling Rate
  • 215µA Average Supply Current
  • 3.0V to 5.5V Power-Supply Voltage
  • 8-Pin µMAX Package

 
  		• CPU Temperature Protection
  		• Fan Control
  		• FPGA Temperature Protection
  		• Temperature Alarms

    Key Specifications:  Temperature Switches
    Part Number Switch Type Functions Interface Accuracy
    (±°C)    		 Temp. Thresh.
    (°C)    		 Features Package/Pins Price
    See Notes
    MAX6687  Remote
    Dual Output Temperature Switch
    Dual Temperature Alarms
    		 Logic 1.5
    +40
    +45
    +50
    +55
    +60
    +65
    +70
    +75
    +80
    		 Open Drain Active Low Output
    µMAX/8
    		 -
    MAX6688  Push Pull Active High Output
    µMAX/8
    		 -
    See All Temperature Switches (25)

    Diagram
    MAX6687, MAX6688: Typical Operating Circuit
    Typical Operating Circuit

    Design Guides
  		• Thermal Management (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-22 of 22

    MAX6687 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6687AU40H    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6687AU40H-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6687AU40L    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6687AU40L-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6687AU75H    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6687AU75L    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6687AU40H+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6687AU40H+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6687AU40L+    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6687AU40L+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6687AU75H+    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6687AU75L+    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6688 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6688AU40H    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6688AU40H-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6688AU40L    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6688AU75H    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6688AU75L    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6688AU40H+    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6688AU40H+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6688AU40L+    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6688AU75H+    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6688AU75L+    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet

    More Information
  		• New Product Press Release 2003-02-25 
  		• Temperature Family by Product Type

    Related Products
    MAX6511, MAX6512, MAX6513 Low-Cost, Remote SOT Temperature Switches
    MAX6501, MAX6502, MAX6503, MAX6504 Low-Cost, +2.7V to +5.5V, Micropower Temperature Switches in SOT23 and TO-220

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     Description 
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     Diagram 

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    Document Ref.: 19-2636; Rev 2; 2003-12-16
    This page last modified: 2008-03-13


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